<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>test1</title>
</head>

<body>
    <p>我是test1</p>
    <iframe src="./test2.html" frameborder="1"></iframe>
</body>

</html>